Which of the following are necessary conditions for specialization to occur? Check all that apply. Individuals focus only on the tasks they prefer. Everyone must be equally productive at the same task. A system of exchange must be in place.

Individuals focus only on the tasks they prefer

Explanation:

Specialization is the process of concentrating at a task as becoming an expert in that field or task, it involves focusing on one service or good and can hence improve the efficiency of the individual or company. The advantage of specialization is that it increases productivity and efficiency of the firm or individual.

Thus when individuals focus on;y on the task they prefer, they are specializing.

even though you have attached neither the chart nor the generalizations, i have located them online. the right answer is d, since they are asking you about a generalization. you can only infer from the chart that between 2008 and 2009 the number of employed workers decreased significantly (from over 115 millions to 107 millions approximately), which signals some type of economic crisis.  

answer; obscene;